CN219139437U - Circuit capable of adjusting rotating speed along with temperature of switching power supply cooling fan - Google Patents
Circuit capable of adjusting rotating speed along with temperature of switching power supply cooling fan Download PDFInfo
- Publication number
- CN219139437U CN219139437U CN202320219397.8U CN202320219397U CN219139437U CN 219139437 U CN219139437 U CN 219139437U CN 202320219397 U CN202320219397 U CN 202320219397U CN 219139437 U CN219139437 U CN 219139437U
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- temperature
- power supply
- switching power
- relay
- fan
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Control Of Electric Motors In General (AREA)
- Control Of Positive-Displacement Air Blowers (AREA)
Abstract
The utility model discloses a circuit capable of adjusting rotating speed along with temperature of a cooling fan of a switching power supply, which comprises a fan used for cooling the switching power supply, and is characterized in that: the device also comprises a voltage stabilizing chip, a current limiting resistor, a temperature switch and a relay; the output end of the voltage stabilizing chip is respectively connected with the input ends of the current limiting resistor, the relay and the temperature switch, the output end of the temperature switch is connected with the controlled end of the relay, and the output ends of the relay and the current limiting resistor are connected with the controlled end of the fan. According to the utility model, through the voltage stabilizing chip, the current limiting resistor, the temperature switch, the relay and the fan, the fan can run at a low rotating speed when the internal temperature of the switching power supply is lower than the set temperature, and at a high rotating speed when the internal temperature of the switching power supply is higher than the set temperature, the fan can run at a high rotating speed, the characteristics of flexibly switching the rotating speed of the fan are achieved, and the problem that the rotating speed of the cooling fan of the switching power supply can be adjusted along with the temperature can be effectively solved.
Description
Technical Field
The utility model relates to the technical field of air-cooling heat dissipation capable of being adjusted along with temperature, in particular to a circuit capable of adjusting rotating speed along with temperature of a switching power supply heat dissipation fan.
Background
At present, a forced air cooling technology is generally adopted for heat dissipation of a switching power supply, and a fan with constant rotation speed is used for cooling a heating element. However, when the rotation speed of the fan with constant rotation speed is set to be low, the temperature in the switching power supply can be quickly increased; when the fan speed is set high, the switching power supply becomes inefficient. Meanwhile, the difference of components in the switching power supply makes the total internal heat production different, and therefore the fixed rotating speed cannot be set. Therefore, the rotating speed of the cooling fan of the switching power supply can be adjusted along with the temperature, and the cooling fan is a problem which needs to be solved by the skilled person in the prior art.
Disclosure of Invention
The utility model aims to provide a circuit capable of adjusting the rotating speed along with temperature for a cooling fan of a switching power supply, which can realize the rotating speed adjustment along with temperature for the cooling fan of the switching power supply.
In order to solve the technical problems, the technical scheme adopted by the utility model is as follows.
The utility model provides a switching power supply radiator fan can be along with temperature regulation rotational speed circuit, includes the fan that is used for carrying out radiating to switching power supply, its characterized in that: the device also comprises a voltage stabilizing chip, a current limiting resistor, a temperature switch and a relay; the output end of the voltage stabilizing chip is respectively connected with the input ends of the current limiting resistor, the relay and the temperature switch, the output end of the temperature switch is connected with the controlled end of the relay, and the output ends of the relay and the current limiting resistor are connected with the controlled end of the fan.
Preferably, the output end of the voltage stabilizing chip is connected with the input end of the current limiting resistor, the output end of the voltage stabilizing chip is connected with the input end of the relay, the output end of the voltage stabilizing chip is connected with the input end of the temperature switch, and the output end of the temperature switch is connected with the controlled end of the relay in a PCB wiring mode.
Preferably, the output ends of the current limiting resistor and the relay are converged into a point on the PCB and then connected with the controlled end of the fan through a twisted pair.
Preferably, the input end of the voltage stabilizing chip is connected with the output end of the switching power supply.
By adopting the technical scheme, the utility model has the following technical progress.
According to the utility model, through the voltage stabilizing chip, the current limiting resistor, the temperature switch, the relay and the fan, the fan can run at a low rotating speed when the internal temperature of the switching power supply is lower than the set temperature, and at a high rotating speed when the internal temperature of the switching power supply is higher than the set temperature, the fan can run at a high rotating speed, the characteristics of flexibly switching the rotating speed of the fan are achieved, and the problem that the rotating speed of the cooling fan of the switching power supply can be adjusted along with the temperature can be effectively solved.
Drawings
FIG. 1 is a block diagram of the structure of the present utility model;
FIG. 2 is a schematic diagram of a voltage stabilizing chip according to the present utility model;
FIG. 3 is a schematic diagram of a current limiting resistor according to the present utility model;
FIG. 4 is a schematic diagram of a temperature switch of the present utility model;
fig. 5 is a schematic diagram of a relay of the present utility model.
Detailed Description
The utility model will be described in further detail with reference to the drawings and the detailed description.
The utility model provides a switching power supply radiator fan's circuit of rotational speed can be adjusted along with temperature, combines the fig. 1 to show, includes steady voltage chip, current-limiting resistor, temperature switch, relay and is used for carrying out radiating fan to switching power supply, and steady voltage chip's output is connected with current-limiting resistor, relay and temperature switch's input respectively, and temperature switch's output is connected with the controlled end of relay, and the output of relay and current-limiting resistor is connected with the controlled end of fan.
Specifically, the output end of the voltage stabilizing chip is connected with the input end of the current limiting resistor in a PCB wiring mode, the output end of the voltage stabilizing chip is connected with the input end of the relay in a twisted pair mode after converging to a point on the PCB, and the output end of the current limiting resistor is connected with the controlled end of the fan through the twisted pair.
The input end of the voltage stabilizing chip is connected with the output end of the switching power supply, the voltage stabilizing chip is powered by the output voltage of the switching power supply and converts the output voltage into stable direct-current voltage for output, and the schematic diagram of the voltage stabilizing chip is shown in fig. 2 and is the prior art and is not repeated here.
The current limiting resistor reduces the rotation speed of the fan by limiting the fan current, and the schematic diagram of the current limiting resistor is shown in fig. 3, which is the prior art and is not described herein.
The temperature switch can detect the internal temperature of the switching power supply, after the temperature switch reaches the set temperature, the temperature switch is changed into a passage from a circuit breaker, a schematic diagram of the temperature switch is shown in fig. 4, and is the prior art, and the description is omitted here.
The relay is controlled by the temperature switch, when the temperature switch is turned on, the coil of the relay is electrified, so that the main circuit of the relay is closed, the current-limiting resistor is short-circuited, and the fan is changed into high-rotation-speed operation. The schematic diagram of the relay is shown in fig. 5, which is the prior art and will not be described here again.
When the fan is in use, the temperature switch is adopted to detect the internal temperature of the switching power supply, when the internal temperature of the switching power supply is lower than the set temperature, the temperature switch is turned off, and the current limiting resistor reduces the rotating speed of the fan by limiting the current of the fan, so that the low-rotating-speed operation of the fan is realized; when the internal temperature of the switching power supply is higher than the set temperature, the temperature switch is turned on, the coil of the relay is electrified, so that the main circuit of the relay is closed, the current-limiting resistor is short-circuited, the high-rotating-speed running of the fan is realized, the characteristics of flexible switching of the rotating speed of the fan are realized, and the problem that the rotating speed of the cooling fan of the switching power supply can be adjusted along with the temperature can be effectively solved.
Claims (4)
1. The utility model provides a switching power supply radiator fan can be along with temperature regulation rotational speed circuit, includes the fan that is used for carrying out radiating to switching power supply, its characterized in that: the device also comprises a voltage stabilizing chip, a current limiting resistor, a temperature switch and a relay; the output end of the voltage stabilizing chip is respectively connected with the input ends of the current limiting resistor, the relay and the temperature switch, the output end of the temperature switch is connected with the controlled end of the relay, and the output ends of the relay and the current limiting resistor are connected with the controlled end of the fan.
2. The temperature-adjustable rotating speed circuit of a switching power supply cooling fan according to claim 1, wherein: the output end of the voltage stabilizing chip is connected with the input end of the current limiting resistor, the output end of the voltage stabilizing chip is connected with the input end of the relay, the output end of the voltage stabilizing chip is connected with the input end of the temperature switch, and the output end of the temperature switch is connected with the controlled end of the relay in a PCB wiring mode.
3. The temperature-adjustable rotating speed circuit of a switching power supply cooling fan according to claim 2, wherein: the output ends of the current limiting resistor and the relay are converged into a point on the PCB and then connected with the controlled end of the fan through a twisted pair.
4. The temperature-adjustable rotating speed circuit of a switching power supply cooling fan according to claim 1, wherein: the input end of the voltage stabilizing chip is connected with the output end of the switching power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320219397.8U CN219139437U (en) | 2023-02-15 | 2023-02-15 | Circuit capable of adjusting rotating speed along with temperature of switching power supply cooling fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320219397.8U CN219139437U (en) | 2023-02-15 | 2023-02-15 | Circuit capable of adjusting rotating speed along with temperature of switching power supply cooling fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219139437U true CN219139437U (en) | 2023-06-06 |
Family
ID=86597370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320219397.8U Active CN219139437U (en) | 2023-02-15 | 2023-02-15 | Circuit capable of adjusting rotating speed along with temperature of switching power supply cooling fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219139437U (en) |
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2023
- 2023-02-15 CN CN202320219397.8U patent/CN219139437U/en active Active
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